The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 2003
Filed:
May. 09, 2001
NEC Tokin Corporation, Sendai, JP;
Abstract
A dielectric layer variable in dielectric constant in dependence upon the strain is formed on at least a part of an outer peripheral surface of a bar having a circular cross section. Interdigital electrodes are faced to the dielectric layer to thereby form a single capacitor. The interdigital electrodes have a plurality of linear electrodes and inclined at a predetermined inclination angle with respect to a center axis of the bar. Preferably, the dielectric layer is provided with a cylindrical insulator faced thereto with a small gap kept therebetween, and the linear electrodes are formed on the peripheral surface of the cylindrical insulator. The linear electrodes may be formed directly on the surface of the dielectric layer.